Felipe Monteiro de Carvalho schrieb:
On Mon, Jul 4, 2011 at 4:53 PM, Hans-Peter Diettrich
<[email protected]> wrote:
I just finished the revised implementation of TCustomNotebook, so that it
can work with and without pages. In that approach I didn't rename
TCustomNotebook, because this is the type used in the widgetsets (see
above). But I made some methods abstract, and derived two new (intermediate)
classes:
Have you already commited? It seams like this will conflict big time
with my changes if you started before them =)
I've not supplied the patch yet, have to move everything into ComCtrls
first :-(
- TPagedNotebook is the old implementation, for use in e.g. TPageControl.
I've redirected all derived controls in the LCL to this new class. The IDE
continues to work, no new bugs seem to be introduced.
ummm .... some problems with that:
1> Please don't name anything related to tab controls as notebook
The widgetsets refer to TCustomNotebook, that's why I cannot change that
name :-(
2> Are you sure that simply using the Delphi hierarchy here couldn't
be a good choice?
That's just what I implemented: the base class provides a tabbed control
without pages, the derived classes add pages (tabsheets...) to it.
3> Does it work in all widgetsets?
A few modifications may be required, where the widgetset implementation
assumes that a TCustomPage parameter is for use as a visible control.
I've found two methods in the Win32 widgetset, which have to bypass some
work, based on
if (ANotebook is TPagedControl) then {handle page visibility...}
Otherwise the TCustomPage parameter only contains tab attributes, e.g.
title = page.Caption.
I do not really understand the complicated handling of the page
controls, in both LCL and widgetset code. As demonstrated in a simple
test program for TTabControl, eventually related controls (tabsheets...)
can become ordinary child controls of the basic tabbed control, with
only the selected one being made visible. This can be done with other
controls, too, which can have any suitable Parent (maybe Nil for
detached floating forms). This approach will also allow to dock controls
of any kind into a page control, as the EasyDockManager does internally.
DoDi
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